Airtight pipe coupling



Oct. 30, 1923.- 1,472,290

J. R. BROWN AIRTIGHT PIPE COUPLING Filed Sept. 25. 1922 Patented Get.3t), 1923.

reprise ECEEL.

JOSEPH RODNEY BROWN, OF FRESNILIIO, MEXICO.

AIRTIGH'I PIPE COUPLING.

Application filed September 25, 1922. Serial No. 590,494.

To aZZ 0.0/2 out it may concern Be it known that I, JosErH RODNEY BnowN,citizen of the United States of America, residing at Fresnillo, State ofZa- 5 catecas, Mexico, have invented certain new and useful Improvementsin Airtight Pipe Couplings, of which the following is a specii'ication.

This invention relates to an air tight con nection for a tapered tubeinserted into another tube or into a coupler of a suction system,operated by the compression of a number of elastic washers of rubber forinstance, and of a number of metal washers held by a gland cover.

The air tight connection, which resists as much pressure as the vacuumin the tube provided with my coupling, is obtained bythe constructionshown in the attached drawing, in which Fig. 1 shows my coupling in aplan view, and Fig. 2 is a cross section of same.

Referring to the drawing, (1) is the ta pered end of a pipe insertedinto the main body of a coupler (8) which is couuterbored and widened sothat all the washers producing an air tight connection may be insertedinto the widened interior provided with 39 threads.

First there is a perforated washer of rubber cloth, which rests againstthe shoulder of the widening to prevent the air from entering betweenthe threads of gland cover;

then comes a steel Washer (5) to protect the rubber cloth washer (6) andprovide a space between the soft metal washer (4-) and said rubber clothwasher Further outside there is a pure gum gasket which due to thepressure by the gland cover transmitted to the exterior 40 steel washerforms an air tight seal. The gland cover (7 keeps all the washers andgasket in place, and is screwed into the widened portion of the body ofcoupler (8) thus forming a tube connection without the use of clamps,lever, screws or flanges.

When the gland cover (7) is screwed in, all the washers are forcedtogether, and the pure gum gasket (3) cannot creep under the pressurenor by the suction, but is kept by the soft metal washer (4).

Having thus described my invention what I claim is:

A pipe coupling comprising a coupler having an opening therein and athreaded enlarged opening at one end provided with a shoulder; a seriesof rubber and steel washers in said enlarged opening: a tapered pipe insaid openings of said coupler and adapted to engage said washers; and agland cover threaded into the enlarged opening of said coupler andadapted to hold said washers in place for the purpose specified.

In testimony whereof I have aiiixed my signature.

JOSEPH RODNEY BROWN.

